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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include <QtWidgets/QWidget>
#include <QtWidgets/QPushButton>
#include <QTest>
QT_BEGIN_NAMESPACE
namespace QtSharedPointer {
Q_CORE_EXPORT void internalSafetyCheckCleanCheck();
}
QT_END_NAMESPACE
class tst_QSharedPointer_and_QWidget: public QObject
{
Q_OBJECT
private slots:
void weak_externalDelete();
void weak_parentDelete();
void weak_parentDelete_setParent();
void strong_weak();
void strong_sharedptrDelete();
public slots:
void cleanup() { safetyCheck(); }
public:
inline void safetyCheck()
{
#ifdef QT_BUILD_INTERNAL
QtSharedPointer::internalSafetyCheckCleanCheck();
#endif
}
};
void tst_QSharedPointer_and_QWidget::weak_externalDelete()
{
QWidget *w = new QWidget;
QPointer<QWidget> ptr = w;
QVERIFY(!ptr.isNull());
delete w;
QVERIFY(ptr.isNull());
}
void tst_QSharedPointer_and_QWidget::weak_parentDelete()
{
QWidget *parent = new QWidget;
QWidget *w = new QWidget(parent);
QPointer<QWidget> ptr = w;
QVERIFY(!ptr.isNull());
delete parent;
QVERIFY(ptr.isNull());
}
void tst_QSharedPointer_and_QWidget::weak_parentDelete_setParent()
{
QWidget *parent = new QWidget;
QWidget *w = new QWidget;
QPointer<QWidget> ptr = w;
w->setParent(parent);
QVERIFY(!ptr.isNull());
delete parent;
QVERIFY(ptr.isNull());
}
// -- mixed --
void tst_QSharedPointer_and_QWidget::strong_weak()
{
QSharedPointer<QWidget> ptr(new QWidget);
QPointer<QWidget> weak = ptr.data();
QWeakPointer<QWidget> weak2 = ptr;
QVERIFY(!weak.isNull());
QVERIFY(!weak2.isNull());
ptr.clear(); // deletes
QVERIFY(weak.isNull());
QVERIFY(weak2.isNull());
}
// ---- strong management ----
void tst_QSharedPointer_and_QWidget::strong_sharedptrDelete()
{
QWidget *parent = new QWidget;
QSharedPointer<QWidget> ptr(new QWidget(parent));
QWeakPointer<QWidget> weak = ptr;
QPointer<QWidget> check = ptr.data();
QVERIFY(!check.isNull());
QVERIFY(!weak.isNull());
ptr.clear(); // deletes
QVERIFY(check.isNull());
QVERIFY(weak.isNull());
delete parent; // mustn't crash
}
QTEST_MAIN(tst_QSharedPointer_and_QWidget)
#include "tst_qsharedpointer_and_qwidget.moc"
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